condition mean min max 4 h after light 4.1 4.1 4.1 8 h after light 6.75 6.4 7.1 12 h after light 3.4 1.8 5.0 4 h after dark 5.050000000000001 4.4 5.7 8 h after dark 2.45 2.3 2.6 12 h after dark 5.800000000000001 2.8 8.8